212430269 has 2 divisors, whose sum is σ = 212430270. Its totient is φ = 212430268.

The previous prime is 212430221. The next prime is 212430287. The reversal of 212430269 is 962034212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200562244 + 11868025 = 14162^2 + 3445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212430269 is a prime.

It is a super-2 number, since 2×212430269² = 90253238374824722, which contains 22 as substring.

It is equal to p_11728253 and since 212430269 and 11728253 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212430769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106215134 + 106215135.

It is an arithmetic number, because the mean of its divisors is an integer number (106215135).

Almost surely, 2^212430269 is an apocalyptic number.

It is an amenable number.

212430269 is a deficient number, since it is larger than the sum of its proper divisors (1).

212430269 is an equidigital number, since it uses as much as digits as its factorization.

212430269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 212430269 is about 14574.9877873019. The cubic root of 212430269 is about 596.6763160569.

The spelling of 212430269 in words is "two hundred twelve million, four hundred thirty thousand, two hundred sixty-nine".